Help us help you. By posting the year, make, model and engine near the beginning of your help request, followed by the symptoms (no start, high idle, misfire etc.) Along with any prevalent Diagnostic Trouble Codes, aka DTCs, other forum members will be able to help you get to a solution more quickly and easily!
Anyone familiar with Nissan's e4wd systems?
The system consists of a rear motor for driving rear wheels, engine driven generator for powering the rear motor, cand a control module.
The issue is the 4wd system isn't working. Initially the generator seemed not to be putting out power to the motor. Think of it like an alternator; output terminal and 2 pin plug. One wire comes from a relay and with switch on 4wd engine running is showing battery voltage but the other got no higher than 59mv. The output of the generator was 3v but if I put my test light to battery +ve and touch the low voltage wire the generator comes on producing system voltage 14-19v.
My thoughts are the module should be good because I think it's what's activating the relay when 4wd switch is pushed. One thing I do find strange is the switch has 6 wires ; 12v, 3 grounds, 5v, and one that seems dead, when you push 4wd 12v stays, 5v is grounded, and the "dead" wire is grounded. I find it strange because it goes from 3mv to gnd, suspected open.
Glad it's not just me, I haven't run into that design on a Nissan.
If you post the year, make and model, we might be able to gather some service info.
Any trouble codes?
Topic Author
